628311114 has 96 divisors (see below), whose sum is σ = 1490106240. Its totient is φ = 196204032.

The previous prime is 628311113. The next prime is 628311121. The reversal of 628311114 is 411113826.

It is a happy number.

628311114 is a `hidden beast` number, since 628 + 31 + 1 + 1 + 1 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (1152) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628311113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3255402 + ... + 3255594.

It is an arithmetic number, because the mean of its divisors is an integer number (15521940).

Almost surely, 2^628311114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628311114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745053120).

628311114 is an abundant number, since it is smaller than the sum of its proper divisors (861795126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628311114 is a wasteful number, since it uses less digits than its factorization.

628311114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 384 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 628311114 is about 25066.1348037546. The cubic root of 628311114 is about 856.4951616241.

The spelling of 628311114 in words is "six hundred twenty-eight million, three hundred eleven thousand, one hundred fourteen".